How does splitting $47 \times 23$ into $47 \times 20$, $47 \times 3$, and addition keep the chunk count below 4? — CAT Quant Prep

How does splitting $47 \times 23$ into $47 \times 20$, $47 \times 3$, and addition keep the chunk count below 4? — CAT Quant Prep | Unlomi